CallataGuidesBusiness phone system for interior design services firms in Charleston, SC
Interior design services firms in the Charleston-North Charleston, SC metro area: 103 establishments in 2023, the local area codes, and what phone service costs a 3-person team.
- Establishments
- 103CBP 2023
- Employees
- 274mid-March 2023
- Per 100k residents
- 11.8U.S. 4.9
- Rank
- 32nd of 324areas by count
The interior design firm market in Charleston, SC
County Business Patterns counts 103 interior design services firms (NAICS 541410, Interior Design Services) in the Charleston-North Charleston, SC metro area for 2023. Together they reported 274 mid-March employees and $15.5 million of payroll for the year. That ranks 32nd of the 324 metro and micropolitan areas where Census published a count for this industry.
With 870,000 residents in the Census 2024 estimate, that is 11.8 interior design services firms per 100,000 people, 139.7% above the national rate of 4.9. Establishments average 2.7 employees, 19.2% below the U.S. average of 3.3. Payroll per employee comes to $56,394, 15.5% below the national $66,767.
| Measure | Charleston, SC | South Carolina | United States |
|---|---|---|---|
| Establishments | 103 | 260 | 16,797 |
| Mid-March employees | 274 | 739 | 55,286 |
| Annual payroll | $15,452,000 | $40,695,000 | $3,691,277,000 |
| Employees per establishment | 2.7 | 2.8 | 3.3 |
| Payroll per employee | $56,394 | $55,068 | $66,767 |
| Establishments per 100,000 residents | 11.8 | 4.7 | 4.9 |
Census County Business Patterns 2023 (mid-March employment; annual payroll). Employees and payroll flagged high-noise are shown but not used in the text. Residents: Census Vintage 2024 estimates.
Establishment size: interior design services firms in Charleston, SC
Of the interior design services firms in Charleston, SC that had employees in March 2023, 85.3% had fewer than five (the U.S. share is 81.7%). 97.1% had fewer than ten. When a business has only a few people, whoever is free answers the phone, and calls that arrive while everyone is busy go to voicemail unless they are routed somewhere else.
| Employment size | Establishments | Share | U.S. share |
|---|---|---|---|
| 1–4 employees | 87 | 85.3% | 81.7% |
| 5–9 employees | 12 | 11.8% | 12.1% |
| 10–19 employees | 3 | 2.9% | 4.3% |
| 20–49 employees | not published | — | 1.6% |
| 50 or more employees | 0 | 0.0% | 0.3% |
Employment-size classes count establishments by mid-March 2023 employment. Establishments with no March employees are excluded from the size classes, so shares are of establishments with employees. Source: Census County Business Patterns 2023.
Why the phone matters for interior design services firms in Charleston, SC
Interior designers coordinate clients, contractors and vendors while spending much of the day on site. A business line that rings their cell and transcribes voicemail keeps project details from getting lost. That holds for interior design services firms in Charleston, SC as much as anywhere.
A few of the calls that come in to interior design services firms in Charleston, SC:
- A client calls about an installation date.
- A contractor calls with a measurement question.
- A vendor calls about a backordered item.
When nobody can pick up
After-hours calls are usually project updates that can wait until morning.
Business-hours routing in Callata sends calls to voicemail, a teammate's cell or an AI agent once the day ends, and voicemails arrive transcribed with an urgency flag.
What a phone system costs an interior design firm in Charleston, SC
The average interior design firm in Charleston, SC has 2.7 employees, so a 3-person team is a reasonable benchmark. Priced per seat, 3 users would run $90.00 a month on RingCentral RingEX Core and $74.85 on Ooma Office Pro (month-to-month list prices, checked September 28, 2026). Callata is $99.00 a month with 5 users included, which is more than either per-seat plan for 3 people; it becomes the lower price at 4 users or more.
At this team size the per-seat plans cost less than Callata's $99 base price, which already covers 5 users; Callata becomes the lower price from 4 users.
| Provider (plan) | Pricing basis | Per month | Per year |
|---|---|---|---|
| Callata (Callata Office) | $99 incl. 5 users, $20 per extra user | $99.00 | $1,188.00 |
| Quo (Starter) | $19.00 per user | $57.00 | $684.00 |
| Nextiva (Core) | $23.00 per user | $69.00 | $828.00 |
| Ooma (Office Pro) | $24.95 per user | $74.85 | $898.20 |
| Dialpad (Standard) | $27.00 per user | $81.00 | $972.00 |
| RingCentral (RingEX Core) | $30.00 per user | $90.00 | $1,080.00 |
Competitor prices are each vendor's published month-to-month list price per user for its lowest plan that includes business calling and texting, checked September 28, 2026: Quo Starter $19, Nextiva Core $23, Ooma Office Pro $24.95 (Essentials excludes texting; one-time $29.95 activation not included), Dialpad Standard $27, RingCentral RingEX Core $30 ($20 billed annually). Prices exclude taxes and fees and may change; annual contracts lower some competitors' prices.
Local area codes for interior design services firms in Charleston, SC
NANPA records place the exchanges of the area's named cities and towns in 2 area codes. 843 has the most, with 267 of 330 exchanges (81%). Callata's plan includes up to 3 local numbers; you can pick them in the area codes your clients recognize, subject to carrier inventory, or port the number you already have for free.
| Area code | Exchanges | Time zone | In service since | Overlay with |
|---|---|---|---|---|
| 843 | 267 | Eastern | 1998 | 854 |
| 854 | 63 | Eastern | 2015 | 843 |
Exchanges are NANPA-assigned central office codes (NPA-NXX) in the rate centers matched to the area's named places. Source: NANPA utilized code and NPA reports.
Setting up Callata for an interior design firm in Charleston, SC
Callata Office costs $99 per month for up to 5 people, and each additional user is $20 a month. That covers up to 3 local numbers, calling from a browser or your cell, transcribed voicemail, recorded calls with AI summaries, after-hours routing and E911 on each number.
If you already have a number in Charleston, SC, porting it to Callata is free. Texting from a local number requires a one-time carrier registration (10DLC, $49), and the numbers available in any area code depend on carrier inventory when you choose them.
Optional AI agents (receptionist, sales, support or scheduler) can answer calls after hours or when nobody picks up, take messages, text, email and transfer to your team. They are billed from prepaid AI minutes at $0.25 per minute, identify themselves as AI, and may only place outbound calls to people who consented, between 8am and 9pm.
Frequently asked questions
How many interior design services firms are there in Charleston, SC?
Census County Business Patterns counted 103 interior design services firms in the Charleston-North Charleston, SC metro area in 2023. They employed 274 people in mid-March.
What does a business phone system cost for a 3-person interior design firm?
At month-to-month list prices checked September 28, 2026, 3 users cost $90.00 a month on RingCentral RingEX Core and $74.85 on Ooma Office Pro. On Callata, $99 a month with 5 users included, then $20 per additional user, the same team pays $99.00.
What area code should an interior design firm in Charleston, SC use?
Area code 843 has the most assigned exchanges among the area's named places, followed by 854. If you already have a local number, you can port it to Callata for free.
Can an AI receptionist answer calls for an interior design firm?
Yes. Callata's optional AI agents can answer when the team is busy or closed, take a message, text, email or transfer the call. They disclose that they are AI and are billed from prepaid AI minutes at $0.25 per minute.